dbcve.org
SafariWeb browser · Apple

CVE-2024-54479

HIGH · 7.5 CVSS v3.1 Published 2024-12-12
Fix available
A fix is available. Upgrade to 2.2 / 11.2 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
The issue was addressed with improved checks. This issue is fixed in Safari 18.2, iOS 18.2 and iPadOS 18.2, iPadOS 17.7.3, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, watchOS 11.2. Processing maliciously crafted web content may lead to an unexpected process crash.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A WebKit vulnerability in Apple's Safari and iOS/macOS platforms allows processing maliciously crafted web content to trigger an unexpected process crash, likely due to insufficient validation or bounds checking. This is a denial-of-service vulnerability affecting multiple Apple platforms running WebKit.

MitigationApply available vendor patches: Safari 18.2, iOS/iPadOS 18.2 and 17.7.3, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, and watchOS 11.2.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
SafariWeb browser
Affected:< 18.2
IpadosOperating system
Affected:< 17.7.3>= 18.0, < 18.2
Iphone OsOperating system
Affected:< 18.2
macOSOperating system
Affected:< 15.2
TvosOperating system
Affected:< 18.2
VisionosOperating system
Affected:< 2.2
WatchosOperating system
Affected:< 11.2

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the Safari browser version
    Open Safari, click Safari in the menu bar, then select About Safari. Note the version number displayed.
    Affected if The version shown is earlier than 18.2 (for example, 18.1.x, 18.0.x, or any 17.x release)
  2. Identify the iOS or iPadOS version
    Open the Settings app, go to General, then About. Note the version number next to Software Version.
    Affected if The version is earlier than 18.2, or falls between 18.0 and 18.2 (inclusive), or is earlier than 17.7.3 on the 17.x branch
  3. Identify the macOS version
    Click the Apple menu in the top-left corner, select About This Mac. Note the version number (for example, 15.1, 14.x, 13.x).
    Affected if The version is earlier than 15.2 (macOS Sequoia) - note that earlier macOS versions include WebKit and are affected
  4. Identify the tvOS version
    Open Settings on Apple TV, go to General, then About. Note the version number.
    Affected if The version is earlier than 18.2
  5. Identify the watchOS version
    Open the Watch app on a paired iPhone, go to My Watch tab, select General, then About. Note the version number.
    Affected if The version is earlier than 11.2
  6. Identify the visionOS version
    Open the Settings app on Apple Vision Pro, go to General, then About. Note the version number.
    Affected if The version is earlier than 2.2

The environment is affected if any Apple device or browser listed above is running a version lower than the safe version threshold specified for that product.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 2.2 / 11.2 / 15.2 or later
Fixed in 2.211.215.2
Interim mitigation

Apply available vendor patches: Safari 18.2, iOS/iPadOS 18.2 and 17.7.3, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, and watchOS 11.2.

Recommended fix High confidence

Upgrade to Safari 18.2, iOS 18.2, iPadOS 18.2 or 17.7.3, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, or watchOS 11.2 depending on your device

  1. 1. Identify the Apple device and operating system (Safari, iOS, iPadOS, macOS, tvOS, visionOS, or watchOS)
  2. 2. Check the current version by going to Settings > General > About (iOS/iPadOS) or System Settings > About (macOS)
  3. 3. For iPhone/iPad: Go to Settings > General > Software Update and install the available update to iOS 18.2/iPadOS 18.2 or iPadOS 17.7.3
  4. 4. For Mac: Go to System Settings > General > Software Update and install the update to macOS Sequoia 15.2
  5. 5. For Safari: Update via macOS Sequoia 15.2 or download Safari 18.2 for older macOS versions from Apple
  6. 6. For Apple TV: Go to Settings > System > Software Updates and update to tvOS 18.2
  7. 7. For Apple Watch: Go to Settings > General > Software Update on the watch or via iPhone, update to watchOS 11.2
  8. 8. For Apple Vision Pro: Go to Settings > General > Software Update and update to visionOS 2.2
Caveat Standard update risks apply - ensure backup before updating; minor UI changes possible in major OS releases

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Safari Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
5.0 hours of engineering $890
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-54479 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data